Beyond Human by Gregory Benford and Elisabeth Malartre

An interesting review of current research in robotics and cybernetic enhancement and where it might go. The book is strongest on the state of the art, but fairly weak on speculating further ahead (lots of interesting ideas, but many of them are not well supported in the text). There's a few interviews with people involved in the development of these technologies, too, which adds a few other points of view to that of the authors.